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LG 42LE5500 - Service Manual

LG 42LE5500
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LED LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LT03E
MODEL : 42LE5500 42LE5500-DA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
Printed in KoreaP/NO : MFL63283601 (1003-REV00)

Table of Contents

Other manuals for LG 42LE5500

Questions and Answers

  • J
    Jason KellerSep 23, 2025
    Why is subtitle not working on my LG LCD TV?
    • L
      Luis BryantSep 23, 2025
      If the subtitle is not working on your LG LCD TV, check whether the subtitle file is supported.
  • E
    Erik BrooksAug 25, 2025
    What causes lines or streaks in pictures on LG 42LE5500 LCD TV?
    • W
      Willie GoodmanAug 25, 2025
      If you see lines or streaks in the picture on your LG LCD TV, check the antenna and try changing its direction. If you're using an HDMI cable, ensure it supports High Speed HDMI to avoid flickers or display issues; use the latest cables if necessary.
  • J
    James VaughanAug 25, 2025
    How to fix lines or streaks in pictures on LG 42LE5500?
    • B
      baxteraaronAug 26, 2025
      If you see lines or streaks in the picture on your LG LCD TV, check the antenna. Try changing its direction to improve the signal.
  • A
    Alisha HuertaAug 27, 2025
    Why is there no picture when connecting HDMI screen to my LG LCD TV?
    • T
      tuckernathanAug 27, 2025
      If you have no picture when connecting an HDMI screen to your LG LCD TV, the HDMI cables might not support HDMI version 1.3. In this case, use the latest cables that support HDMI version.
  • K
    Kelly GarnerAug 27, 2025
    Why is screen color unstable or single color on my LG LCD TV?
    • C
      chriscooperAug 27, 2025
      If your LG LCD TV screen color is unstable or shows a single color, check the signal cable. If the issue persists, reinstall the PC video card.
  • A
    Andrew YoderSep 13, 2025
    Why is the subtitle not working on my LG LCD TV?
    • S
      sophiasmithSep 13, 2025
      If the subtitle is not working on your LG LCD TV, check that the video file and subtitle file have the same name and are located in the same folder. Also, verify that the subtitle file and language are supported. You can check the subtitle file's language by opening it on a PC.
  • V
    victoria28Sep 12, 2025
    What to do if LG 42LE5500 LCD TV displays “This file is invalid” or audio is normal but video isn't?
    • J
      johnny48Sep 12, 2025
      If your LG LCD TV displays “This file is invalid” or the audio works but the video doesn't, check if the file plays normally on a PC to see if it's damaged. Also, verify that the resolution, video/audio codec, and frame rate are supported.
  • L
    Laurie LesterSep 12, 2025
    What to do if LG 42LE5500 displays “Unsupported Audio” or video is normal but audio isn't?
    • L
      Lauren DominguezSep 12, 2025
      If your LG LCD TV displays “Unsupported Audio” or the video is working but the audio isn't, check if the file plays normally on a PC to ensure it's not damaged. Also, verify that the audio codec, bit rate, and sample rate are supported.
  • M
    Marcia GonzalezSep 4, 2025
    What to do if my LG LCD TV screen color is unstable or single color?
    • R
      Richard HaleSep 4, 2025
      If the screen color on your LG LCD TV is unstable or displays a single color, check the signal cable. If problems persist, try reinstalling the PC video card.
  • M
    Michael ReynoldsSep 2, 2025
    How to fix poor reception on some channels of LG 42LE5500?
    • N
      nancy47Sep 2, 2025
      If you're experiencing poor reception on some channels with your LG LCD TV, reorient the antenna to better receive the weaker station's signal. Also, check for any potential sources of interference.

Summary

LED LCD TV Service Manual

CAUTION

Warning to read safety precautions before servicing the chassis.

Safety Precautions

Important Safety Notice

Essential safety parts replacement and design modification warnings.

General Guidance

Guidelines for safe servicing, transformer use, and wire placement.

Leakage Current Cold Check

Procedure for checking AC leakage current with the set unplugged.

Leakage Current Hot Check

Procedure for checking AC leakage current with the set plugged in.

Specifications

Adjustment Instruction

Adjustment items

Lists items for PCB and set assembly adjustments.

MAC Address Download & LAN test

Method for downloading MAC address and performing LAN connectivity tests.

PING Test (LAN Operating Test)

Procedure for testing LAN connectivity using PING test.

Main S;W program download

Steps for downloading the main software program via USB.

Adjustment of White Balance: (For Automatic Adjustment)

Process for automatic white balance adjustment using a color analyzer.

Adjustment of White Balance (for Manual adjustment)

Procedure for manual white balance adjustment using a color analyzer.

Exploded View

IMPORTANT SAFETY NOTICE

Safety warning regarding special parts in the schematic and exploded view.

LED LCD TV Key Features

2 Types of LED - IOP

2 Types of LED - Edge

Main PCB for Broadband

Interconnection - 1

Interconnection - 2

Interconnection - 4

Standard Repair Process

A. Video error

Troubleshooting guide for video-related issues.

B. Power error

Troubleshooting guide for power-related issues.

C. Audio error

Troubleshooting guide for audio-related issues.

D. Function error

Troubleshooting guide for general function and remote control errors.

E. Noise

Troubleshooting guide for audio or mechanical noise issues.

F. Exterior defect

Troubleshooting guide for physical defects on the TV exterior.

Appendix: Exchange T-Con Board (1)

Appendix: Exchange T-Con Board (2)

Appendix: Exchange PSU(LED driver)

Appendix: Exchange the Module (1)

Appendix: Exchange the Module (2)

LG 42LE5500 Specifications

General IconGeneral
Display diagonal42 \
Display brightness- cd/m²
Native aspect ratio16:9
Contrast ratio (dynamic)5000000:1
PC Audio inYes
RF ports quantity1
HDMI ports quantity4
USB 2.0 ports quantity2
Component video (YPbPr/YCbCr) in3
Audio systemInfinite Sound
RMS rated power20 W
Panel mounting interface200 x 200 mm
Power requirements100V - 240V, 50/60 Hz
Annual energy consumption132.54 kWh
Weight and Dimensions IconWeight and Dimensions
Weight (with stand)19504 g
Weight (without stand)16692 g

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